Refining Knowledge (Technology) Daily Question 101213
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We welcome everyone to actively participate in the learning and discussion of professional basic knowledge in the refining technology exchange area! In accordance with the forum’s unified requirements, the maximum score for this activity is 5 Wealth points, and it is prohibited to assign charm scores. Friendships and duplicate ratings are also declined. Please be cautious when posting; edits will not be effective! Those who have different opinions on the provided answer keys can post discussions the next day, and those who provide solutions or their own opinions regarding the daily question’s answer key will receive appropriate rewards! The focus is on participation, with prizes for those who participate. ( ) 1. The boiling range of gasoline fractions is approximately 130°C to 250°C. % P! @' T" H8 r3 O' ` C （ ）2. The viscosity of any liquid increases as pressure rises. ) D/ f2 c S% N5 I0 G （ ）3. The top temperature should be the dew point temperature under the vapor pressure of the product at the tower top. & i; a. s+ i, s# o4 `* d/ F+ k （ ）4. During shutdown for cleaning, gasoline is volatile; there is no need to use steam for cleaning – air is sufficient. （ ）5. Foam fire extinguishers cannot be used to extinguish fires involving water-sensitive materials or electrical equipment. 8 B' j2 t/ b5 h Reference answers: 1. Wrong 2. Wrong 3. Right 4. Wrong 5. Right
1. Wrong 2. Wrong 3. Wrong 4. Wrong 5. Right
1. True 2. False 3. False 4. False 5. False
Reply 1# dongliangsir: 1 is incorrect; the temperature range of 130℃~250℃ applies to kerosene fractions. 2 is incorrect. 3 is correct. 4 is incorrect. 5 is correct
1X, 2X, 3X, 4X, 5V
Reply 1# dongliangsir Wrong Wrong Wrong Right
Reply to 1# dongliangsir: 1. Wrong; the boiling range of gasoline is from C5 to 205°C. 2. Wrong; the effect of pressure on liquid viscosity can be ignored. 3. Correct. 4. Wrong; during shutdown and line cleaning, the gasoline line should first be flushed with water and then with steam. 5. Correct
(Incorrect) 1. The boiling range of gasoline fractions is approximately 130°C to 250°C. (Incorrect) 2. The viscosity of any liquid increases as pressure rises. (Incorrect) 3. The top temperature of a tower should be the dew point temperature corresponding to the vapor pressure of the product at the tower top. (Incorrect) 4. During shutdown and cleaning, since gasoline is volatile, it is not necessary to use steam for cleaning; air is sufficient. (Wrong) 5. Foam fire extinguishers cannot be used to extinguish fires involving water-sensitive materials or electrical equipment.